Conductive face-cooled laser crystal

Details Conductive face-cooled laser crystal Conductive face-cooled laser crystal

H - Electricity

01

S

H01S 3/04 (2006.01) G02B 7/00 (2006.01) G02F 1/37 (2006.01) H01S 3/042 (2006.01)

Patent

CA 2093960

A technique for passively removing heat from an optical element in a laser system through its optically transmissive faces. Heat is removed by way of optically transmissive heat sinks or other heat conducting media disposed adjacent the optically transmissive surfaces of the optical element. Heat is transferred out of the optical element in a direction parallel to the direction of propagation of energy, thus minimizing problems associated with thermal gradients. Devices employing optical elements such as nonlinear frequency conversion crystals and laser crystals may utilize the heat management approach of the present invention to achieve better performance. Heat is transferred to the heat conducting media by direct contact, or through narrow gas-filled gaps disposed between the optical element and the heat conducting media.

L'invention est une méthode et un système servant à contrôler la qualité d'une couche de phosphate déposée sur une surface métallique de grandes dimensions. La méthode consiste à appliquer un courant ou une tension entre la surface métallique et une ou plusieurs contre-électrodes quand celles-ci se trouvent dans la solution de phosphate et en leur appliquant une tension alternative entretenue. On obtient le spectre d'impédance en courant alternatif en mesurant la tension alternative entre le substrat métallique et une ou plusieurs électrodes de référence placées entre les contre-électrodes et le substrat. Le spectre d'impédance en courant alternatif donne une indication des défauts dans la couche de phosphate, même quand ceux-ci se trouvent dans une région relativement petite par rapport à l'aire totale de la surface métallique.

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